Triangle XYZ has vertices at X(-4, 2), Y(2, 2), and Z(2,4). After a dilation is applied, the image triangle X'Y'Z' has vertices X'(-12, 6), Y'(6, 6), and Z'(-6, 12). What is the scale factor for the dilation?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

What is the slope of the line that contains the points (-2,1) and (0,-3)